Metal bar



FIG. 1 is an elevational view of two adjacent sides of the metal bar showing our new design;

FIG. 2 is an elevational view of the sides opposite those shown in FIG. 1;

FIG. 3 is an elevational view taken from the left of FIG. 1;

FIG. 4 is a perspective bottom view thereof; and

FIG. 5 is a perspective top view thereof. 

The ornamental design for a metal bar, substantially as shown and described. 